The specific flaw exists within the reuse of private SSL keys for
multiple devices and installations. The keypair is stored in
/etc/ssl/server.crt and /etc/ssl/server.key. Disclosure of the private
key allows an attacker to decrypt and monitor SSL communications with
the target.

-- Vendor Response:
Sourcefire states:
Mitigation of this problem can be accomplished by replacing the static
keys with custom keys. These instructions can be found in the
installation guide for your product (available on the Sourcefire support
site).

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.